富勒烯(C_(60)/C_(70))与三苯基胺间的光诱导电子转移过程研究  

Photoinduced Electron Transfer Processes between Triphenylamine and Fullerenes (C_(60)/C_(70))

作　　者：曾和平[1] 

机构地区：[1]华南师范大学化学系,广州510631

出　　处：《化学学报》2002年第9期1543-1547,共5页Acta Chimica Sinica

基　　金：国家自然科学基金 (No .2 0 0 710 12 ) ;教育部高校骨干教师资助计划 (No .2 0 0 0 6 5 );广东省自然科学基金 (No .0 0 0 70 0 )资助项目

摘　　要：用激光光解方法研究了富勒烯 (C60 /C70 )与三苯基胺 (TPA)间的光诱导电子转移过程 .在近红外区 ,观测到TPA阳离子自由基 ,富勒烯 (C60 /C70 )激发三线态和阴离子自由基 .在苯腈溶液中 ,利用瞬态谱测定了电子从TPA转移到富勒烯 (C60 /C70 )激发三线态的量子转化产率 (Φet)和电子转移常数 (ket) .Photoinduced electron transfer processes between fullerenes (C-60/C-70) and triphenylamine (TPA) have been studied by nanosecond laser flash photolysis. Quantum yields (Phi(et)) and rate constants (k(et)) of electron transfer from TPA to excited triplet state of fullerenes (C-60/C-70) in benzonitrile have been evaluated by observing the transient absorption bands in the near-IR region where the excited triplet state, radical anion of fullerenes (C-60/C-70) and radical cations of TPA appear.

关 键 词：三苯基胺 光诱导电子转移 富勒烯 瞬态谱 碳60 碳70 激光光解 

分 类 号：O621.25[理学—有机化学]